Need' verb has two usages: as an auxiliary verb and as a main verb.
'Need' as the main verb
As the main verb the meaning of 'need' is 'require' and 'need' is followed by the preposition 'to.'
Examples:
You need to know the real story
We can add -s with 'need' if the subject is third-person singular number.
Examples:
He needs our helping hand.
It needs our sympathy
We can use do or does to make a question.
Examples:
Do you need help?
Does he need any support?
'Need' as an auxiliary verb
As an auxiliary verb, 'need' does not require any change. It means we don't have to add -s or -es after need if the subject is a third-person singular number; we don't need "do/es" to form a question or negative sentence.
Examples:
He need not need help.
Need we look for help?
If we want to refer to past time, 'need' as an auxiliary verb is followed by a perfect infinitive.
Examples:
They need not have done this.
We need not have cut trees.
Need' verb has two usages: as an auxiliary verb and as a main verb.
'Need' as the main verb
As the main verb the meaning of 'need' is 'require' and 'need' is followed by the preposition 'to.'
Examples:
You need to know the real story
We can add -s with 'need' if the subject is a third-person singular number.
Examples:
He needs our helping hand.
It needs our sympathy
We can use "do" or "does" to make a question.
Examples:
Do you need help?
Does he need any support?
'Need' as an auxiliary verb
As an auxiliary verb, 'need' does not require any change. It means we don't have to add -s or -es after need if the subject is a third-person singular number; we don't need "do/es" to form a question or negative sentence.
Examples:
He need not need help.
Need we look for help?
If we want to refer to past time, 'need' as an auxiliary verb is followed by a perfect infinitive.
Examples:
They need not have done this.
We need not have cut trees.
English Alphabet and Speech Sound